53899799779 has 4 divisors (see below), whose sum is σ = 61599771184. Its totient is φ = 46199828376.

The previous prime is 53899799753. The next prime is 53899799801. The reversal of 53899799779 is 97799799835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53899799779 - 2⁷ = 53899799651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53899799579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3849985692 + ... + 3849985705.

It is an arithmetic number, because the mean of its divisors is an integer number (15399942796).

Almost surely, 2^53899799779 is an apocalyptic number.

53899799779 is a deficient number, since it is larger than the sum of its proper divisors (7699971405).

53899799779 is an equidigital number, since it uses as much as digits as its factorization.

53899799779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699971404.

The product of its digits is 2430456840, while the sum is 82.

The spelling of 53899799779 in words is "fifty-three billion, eight hundred ninety-nine million, seven hundred ninety-nine thousand, seven hundred seventy-nine".